Fly ash self compacting concrete(SCC) was prepared by replacing 40% cement with fly ash. Its workability, basic mechanical properties and axial compression deformation properties with the volume fraction of steel fibers were studied. The results show that the workability of fly ash SCC decreases with the increase of the volume fraction of steel fibers. When the volume fraction of steel fibers is more than 075%, the workability decreases most remarkable. The change of the volume fraction of steel fibers has slight effect on the compressive strength of fly ash SCC, but it can significantly improve its splitting tensile strength and flexural strength. When the volume fraction of steel fibers is 100%, the splitting tensile strength and flexural strength are increased by 14% and 12% respectively compared with SCC without steel fiber fly ash. The addition of steel fibers can significantly improve the axial compressive deformation properties of fly ash SCC. When the volume fraction of steel fiber is 050%, its ultimate stress, peak strain, strain energy and relative toughness are increased by 3%, 35%, 53% and 49% respectively compared with SCC without steel fiber fly ash.